good oil if you run mercury. mercury now made in China and have larger tolerances. so 25/40 oil is needed. if you run a tier one premium motor like HONDA or YAHAMA...Read complete review

good oil if you run mercury. mercury now made in China and have larger tolerances. so 25/40 oil is needed. if you run a tier one premium motor like HONDA or YAHAMA this oil is way to thick. use 10w 30 in these motors.

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How could a big company like Overtons run out of sterndrive motor oil during the winterizing season? I'll use the oil next season; had to buy 4 quarts at a West Marine. Better...Read complete review

How could a big company like Overtons run out of sterndrive motor oil during the winterizing season? I'll use the oil next season; had to buy 4 quarts at a West Marine. Better wake up that inventory manager.